Customer has 10 y/o Carrier air handler matched with 10 y/o Payne AC that operates for whole house. System was not working due to blown 5 amp fuse. Performed inspection of system and found no immediate issues. Noticed presence of biological growth. Recommend UV BlueTube to target and prevent growth. Blower wheel cleaning needed. No form of water protection present. Recommend inline water safety. 16x20x1 filter was recently replaced. Pressure levels were normal. Coils are fair. Condenser electrical components are good. AC breaker is wrong size for system. Informed customer of all findings. System is currently working.